Microbial diversity during composting cycles of rice straw
Journal Title: International journal of Advanced Biological and Biomedical Research - Year 2013, Vol 1, Issue 3
Abstract
Mesophilic bacteria, fungi and actinomycetes varied during composting cycles with high numbers in the initial and final cycles with maximal values in compost C and D, and sharply decreased in the heating cycles. Staphylococcus aureus and Bacillus subtilis were dominated at the initial composting cycle. Whereas, at maturity Bacillus subtilis was the major followed by B.badies, B.polymixa and B.brevious and exhibited high numbers in compost C and D. Thermophilic B.stearothermophilus,Thermus sp. and other Bacillus sp. were the major in the heating cycles(20,40 days) with maximum values in compost A and D. Fusarium oxysporium and F. moniliform disappeared at the heating cycles while, Rhizopus nigricans was the major mesophilic fungus found in compost heaps with maximum value in compost D. Aspergillus fumigatus was dominated in the heating cycles with high frequency also in compost D. Trichoderma viride and T. ressei appeared only in cooling cycle and dominated in compost D. Streptomyces antibioticus, St. cinnaborinus, St. roses, Thermo dichotomicus and Thermo vulgaris exhibited high frequencies in all compost heaps in initial and cooling cycles. While, Thermo dichotomicus and Thermo vulgaris were dominated in heating cycles. Microbial succession and community dynamics started by high numbers of mesophilic bacteria, actinomycetes and fungi in the initial phase followed by high numbers of thermophilic ones in the heating phase whereas, other mesophilic organisms appeared in the final cooling phase. Mixing equal ratios of Rice, wheat, clover, faba bean and maize straw (compost D) might be more suitable in composting of rice straw.
Authors and Affiliations
Mohamed Hefnawy| Botany department, Faculty of Science Menoufia University, Egypt mohamed_hefnawy@ymail.com, Mohamed Gharieb| Botany department, Faculty of Science Menoufia University, Egypt, Osama M. Nagdi | National Agriculture research Center, Giza, Egypt
Keywords
Related Articles
- EP ID EP12806
- DOI -
- Views 446
- Downloads 19
Changes of seed yield, seed protein and seed oil in rapeseed (Brassica napus L.) under application of different bio fertilizers
This experiment was lay out in order to evaluate the effects of different biofertilizers on seed yield, protein and oil of rapeseed in Iran. The experiment was a factorial design with three replications. Treatments wer...
Sweetness equivalence ratio of Stevia (Stevia Rebaudiana Bertoni) with sugar adopted in Ethiopia
Low caloric sweeteners have been investigated to substitute sugar as an advantage for both nutritional and medicinal purpose. These sugar substitutes are interesting particularly for concepts marketed under a natural c...
Vermicompost and verminculture: structure, benefits and usage
Vermiculture is the culture of earthworms. The goal is to continually increase the number of worms in order to obtain a sustainable harvest. The worms are either used to expand a vermicomposting operation or sold to cu...
Effective of Sick Building Syndrome on Irritation of the Eyes and Asthma
In this research, we investigated basic symptoms of syndrome in illnesses of sick buildings. We designed a questionnaire and asked from male of dormitory residence. Questions of the questionnaire were more about known...
The Effects of Using Artificial Insemination Techniques on Reproductive Performance in Ghezel Sheep
Objective: The aim of the present study was to evaluate artificial insemination techniques on reproductive performance in Ghezel ewes synchronized with CIDR during breeding season. Methods: All ewes were treated with c...